"These findings support the hypothesis that organophosphate exposure, at levels common among US children, may contribute to ADHD prevalence. Prospective studies are needed to establish whether this association is causal."

I don't want to take a swing at you blue but what you have done is what most people do. You read this article and your brain clicked, "Scientists say pesticides cause ADHD". Whenever the study does not state pesticides cause ADHD, just that it 'might' cause ADHD, further studies are required to see if there's a causal link and just not a random link.